Camera Synchronization AC Operation only

CAMERA SYNCHRONIZATION (AC OPERATION ONLY)

When using more than one camera power supply, a brief vertical roll may occur on the monitor when a camera view is switched. To eliminate vertical roll, adjust the phase control by synchronizing, or line-lock- ing, the cameras to one another. Use the phase potentiometer located on the side of the camera (refer to Figure 1) to make adjustments.

It may be necessary to have two people in communication when synchronizing the cameras: one person at the camera and another person at the monitor to observe the vertical roll and the effect of any adjust- ments made at the camera.

To synchronize the cameras do the following:

1.Choose a reference camera to which all other cameras will be phased.

2.Select a camera and synchronize it to the reference camera by turning the phase adjustment control clockwise and/or counterclockwise.

3.Each time an adjustment is made, switch back and forth between the camera you are adjusting and the reference camera. Repeat this process as many times as necessary, until the roll between the cameras is no longer noticeable.

4.Adjust the phase of all other cameras by repeating steps 2 through 3. Always adjust to the reference camera selected in step 1.

NOTE: The preferred method for camera phase adjustment is to use a dual trace oscilloscope to align the vertical sync pulses of the reference camera to the selected camera(s).

DYNAMIC RANGE AND THE EDR (EXTENDED DYNAMIC RANGE) FEATURE

Dynamic range is the ratio between the brightest and darkest parts of an image or scene. A scene that ranges from bright sunlight to deep shadows is said to have a high dynamic range, while indoor scenes with less contrast will have a low dynamic range.

The EDR feature will help capture the entire range of the scene. A 12 times improvement in dynamic range can be achieved with this feature. In scenes with very high dynamic range, the EDR feature will exhibit a higher noise level than when the feature is turned off. This is normal, and not a mal-function.

NOTE: Depending on the scene contrast, it may or may not be possible to capture the entire range with any camera. Careful camera placement should be considered in extreme cases.

[ 10 ] Pelco Manual C1937M-C (4/03)

CC3701H-2X, C1937M-C (4/03) specifications

The Pelco C1937M-C (4/03) is a robust and versatile video surveillance camera that has become popular in various security applications. Known for its high-quality imaging and reliable performance, the CC3701H-2X model comes equipped with several advanced features and technologies that enhance its usability and effectiveness in diverse environments.

One of the standout features of the Pelco C1937M-C is its high-resolution imaging capabilities. It provides clear and detailed video output, ensuring that critical details are visible even in challenging lighting conditions. This capability is essential for applications where facial recognition or license plate identification is required, making it an ideal choice for security professionals.

The CC3701H-2X incorporates advanced image processing technology that enables it to perform well in both low-light and high-contrast situations. With a wide dynamic range (WDR), this camera can capture clear images in scenes that have both bright and dark areas, significantly reducing issues related to glare and shadows. The addition of infrared (IR) capabilities allows for night vision, ensuring that surveillance can continue around the clock.

Durability is another characteristic that sets the Pelco C1937M-C apart. This camera is designed to withstand harsh environmental conditions, making it suitable for outdoor installations. With an IP-rated housing, it offers protection against dust and moisture, ensuring long-term functionality without the need for frequent maintenance or replacement.

Moreover, the CC3701H-2X leverages Power over Ethernet (PoE) technology, which simplifies installation by allowing the camera to receive both power and data through a single cable. This not only reduces the complexity of the installation process but also enhances flexibility in camera placement, as it can be installed in locations where power outlets may not be readily available.

Integration with existing security systems is made easy with the Pelco C1937M-C camera, as it supports various communication protocols. This ensures compatibility with a wide range of video management systems (VMS), facilitating seamless operation in multi-camera setups.

In conclusion, the Pelco C1937M-C (4/03) and CC3701H-2X model stand out as a reliable choice for security applications, offering high-resolution imaging, advanced low-light performance, rugged durability, and easy installation through PoE technology. Its versatility and integration capabilities make it an essential asset for both commercial and residential security solutions.